Item No.: ST-3139M
8 melodies choosing by pins inside of chime
80dB of volume
Work frequency 50-60MHz
Operating power requestion: 1pcs 9V alkaline battery for chime
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ST-3138M
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Item No.: ST-3139M
8 melodies choosing by pins inside of chime
80dB of volume
Work frequency 50-60MHz
Operating power requestion: 1pcs 9V alkaline battery for chime
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